| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.hadoop.hbase.master.assignment; |
| |
| import java.io.IOException; |
| import java.util.Optional; |
| |
| import org.apache.hadoop.hbase.ServerName; |
| import org.apache.hadoop.hbase.exceptions.UnexpectedStateException; |
| import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv; |
| import org.apache.hadoop.hbase.procedure2.ProcedureMetrics; |
| import org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer; |
| import org.apache.hadoop.hbase.procedure2.ProcedureSuspendedException; |
| import org.apache.hadoop.hbase.procedure2.RemoteProcedureDispatcher.RemoteOperation; |
| import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil; |
| import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.AssignRegionStateData; |
| import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.RegionTransitionState; |
| import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode; |
| import org.apache.yetus.audience.InterfaceAudience; |
| |
| /** |
| * Leave here only for checking if we can successfully start the master. |
| * @deprecated Do not use any more. |
| * @see TransitRegionStateProcedure |
| */ |
| @Deprecated |
| @InterfaceAudience.Private |
| public class AssignProcedure extends RegionTransitionProcedure { |
| |
| private boolean forceNewPlan = false; |
| |
| protected volatile ServerName targetServer; |
| |
| public AssignProcedure() { |
| } |
| |
| @Override |
| public TableOperationType getTableOperationType() { |
| return TableOperationType.REGION_ASSIGN; |
| } |
| |
| @Override |
| protected boolean isRollbackSupported(final RegionTransitionState state) { |
| switch (state) { |
| case REGION_TRANSITION_QUEUE: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| @Override |
| protected void serializeStateData(ProcedureStateSerializer serializer) throws IOException { |
| final AssignRegionStateData.Builder state = |
| AssignRegionStateData.newBuilder().setTransitionState(getTransitionState()) |
| .setRegionInfo(ProtobufUtil.toRegionInfo(getRegionInfo())); |
| if (forceNewPlan) { |
| state.setForceNewPlan(true); |
| } |
| if (this.targetServer != null) { |
| state.setTargetServer(ProtobufUtil.toServerName(this.targetServer)); |
| } |
| if (getAttempt() > 0) { |
| state.setAttempt(getAttempt()); |
| } |
| serializer.serialize(state.build()); |
| } |
| |
| @Override |
| protected void deserializeStateData(ProcedureStateSerializer serializer) throws IOException { |
| final AssignRegionStateData state = serializer.deserialize(AssignRegionStateData.class); |
| setTransitionState(state.getTransitionState()); |
| setRegionInfo(ProtobufUtil.toRegionInfo(state.getRegionInfo())); |
| forceNewPlan = state.getForceNewPlan(); |
| if (state.hasTargetServer()) { |
| this.targetServer = ProtobufUtil.toServerName(state.getTargetServer()); |
| } |
| if (state.hasAttempt()) { |
| setAttempt(state.getAttempt()); |
| } |
| } |
| |
| @Override |
| protected boolean startTransition(final MasterProcedureEnv env, final RegionStateNode regionNode) |
| throws IOException { |
| return true; |
| } |
| |
| @Override |
| protected boolean updateTransition(final MasterProcedureEnv env, final RegionStateNode regionNode) |
| throws IOException, ProcedureSuspendedException { |
| return true; |
| } |
| |
| @Override |
| protected void finishTransition(final MasterProcedureEnv env, final RegionStateNode regionNode) |
| throws IOException { |
| } |
| |
| @Override |
| protected void reportTransition(final MasterProcedureEnv env, final RegionStateNode regionNode, |
| final TransitionCode code, final long openSeqNum) throws UnexpectedStateException { |
| } |
| |
| @Override |
| public Optional<RemoteOperation> remoteCallBuild(final MasterProcedureEnv env, |
| final ServerName serverName) { |
| return Optional.empty(); |
| } |
| |
| @Override |
| protected boolean remoteCallFailed(final MasterProcedureEnv env, final RegionStateNode regionNode, |
| final IOException exception) { |
| return true; |
| } |
| |
| @Override |
| public void toStringClassDetails(StringBuilder sb) { |
| super.toStringClassDetails(sb); |
| if (this.targetServer != null) sb.append(", target=").append(this.targetServer); |
| } |
| |
| @Override |
| protected ProcedureMetrics getProcedureMetrics(MasterProcedureEnv env) { |
| return env.getAssignmentManager().getAssignmentManagerMetrics().getAssignProcMetrics(); |
| } |
| |
| @Override |
| public void setProcId(long procId) { |
| super.setProcId(procId); |
| } |
| } |